<template>
  <div>
    <nav-bar>
      <div slot="left"
           class="back">
        <img src="~assets/img/common/back.svg"
             alt=""
             @click="backClick">
      </div>
      <div slot="center"
           class="title">
        <div v-for="(item,index) in titles"
             class="item-title"
             :class="{active:index===currentIndex}"
             @click="titleClick(index)">{{item}}</div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
import NavBar from 'components/common/navbar/NavBar'
export default {
  name: 'DetailNavBar',
  data () {
    return {
      titles: ['商品', '参数', '评论', '推荐'],
      currentIndex: 0
    }
  },
  components: {
    NavBar,
  },
  methods: {
    titleClick (index) {
      this.currentIndex = index
      this.$emit('titleClick', index)

    },
    backClick () {
      this.$router.back()
    }
  },
}

</script>
<style  scoped>
.title {
  display: flex;
  font-size: 13px;
}
.item-title {
  flex: 1;
}
.active {
  color: var(--color-high-text);
}
.back {
  margin-top: 10px;
}
</style>